The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 01, 2014
Filed:
Mar. 01, 2011
Kousuke Kajiki, Tokyo, JP;
Kousuke Kajiki, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A photoconductive element for performing at least one of generation and detection of terahertz radiation includes a photoconductive layer formed of a semiconductor material and configured to generate photoexcited carriers by being irradiated with excitation light, and a plurality of electrodes provided on the photoconductive layer. The material of the photoconductive layer is a material that makes a depletion layer produced in the photoconductive layer have a thickness smaller than an optical absorption length of the photoconductive layer for a wavelength of the excitation light. A film thickness of the photoconductive layer is adjusted so that the depletion layer is formed over an entirety in a direction of the film thickness within at least a portion of the photoconductive layer between the plurality of electrodes.